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What technical requirements need to be ensured when raising fish mixed with shrimp in aquaculture?

AgriSearch: The Importance of Pond Management in Integrated Snakehead and Whiteleg Shrimp Farming

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Integrated snakehead and whiteleg shrimp farming requires proper pond management.

Integrated snakehead and whiteleg shrimp farming is a relatively new practice that has recently gained significant attention. In order to successfully develop this model, it is crucial to focus on pond management. In this article, AgriSearch will provide valuable information about pond management for integrated snakehead and whiteleg shrimp farming.

Table of Contents

General Technical Requirements

The suitable pond area for integrated snakehead and whiteleg shrimp farming ranges from 2,000 to 5,000 square meters.

There are several technical requirements that must be met:

The pond banks must not leak and should retain water without any loss or overflow.

The pond banks should be at least 0.3 meters higher than the highest water level in the pond.

The depth of the pond should be between 1.5 to 1.8 meters when the water level is at 1.2 to 1.5 meters.

The bottom pH level should be greater than 5.5, and the water pH level should range from 7.5 to 8.5.

The dissolved oxygen content should be between 4 to 9 mg/l.

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Basic techniques for pond preparation

The farming pond should have separate supply and drainage systems. The water source for fish and shrimp must be clean and free from pollution.

Integrated snakehead and whiteleg shrimp farming can be done in ponds with different types of bottoms, but the most suitable ones are sandy, sandy-muddy, or gravelly bottoms. The pond bottom must not leak or be permeable. The farming location should be easily accessible and have a power supply for production.

Pond Renovation for Integrated Snakehead and Whiteleg Shrimp Farming

In the Case of New Ponds

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Preparation steps for new ponds

For newly constructed ponds, water should be filled into the pond and left to soak for 2 to 3 days before being drained. It is recommended to repeat this filling and draining process 2 to 3 times. Lime should be applied to the pond bottom for renovation. The amount of lime depends on the pH level of the soil at the bottom:

For pH levels from 6 to 7, use 300 – 600 kg/ha.

For pH levels from 4.5 to 6, use 600 – 1,000 kg/ha.

Use lime powder (CaCO3) or hydrated lime Ca(OH)2 to disinfect and renovate the farming pond. During the snakehead and whiteleg shrimp farming process, dolomite (black lime) or limestone powder can be used to adjust the water pH level.

After applying lime, the pond bottom should be plowed to ensure high contact between the lime and the soil, enhancing bactericidal and acid-reducing effects. Depending on weather conditions, the pond should be sun-dried for 7 to 10 days before water is introduced into the pond through a filtration system.

In the Case of Existing Ponds

After harvesting snakehead fish, the water in the pond should be completely drained, and the sediment at the bottom should be dredged. Lime should be applied, and the pond should be plowed and then sun-dried for 10 to 15 days to decompose organic matter, toxins, and disease-causing organisms harmful to shrimp.

If it is not possible to completely drain the pond, the wet renovation method can be used when sun-drying the pond. The pond bottom should be aerated and washed using a pump to remove waste substances, followed by the application of lime and pond coloring.

All settling ponds, holding ponds, and treatment ponds should undergo the same renovation process as the farming pond.

Efficient Water Treatment for a Clean Farming Pond Environment

After renovating the pond bottom, water should be introduced into the pond through a filtration system and left for 2 to 3 days to allow any remaining eggs in the water to hatch into larvae before conducting water treatment.

The following methods can be used for water treatment:

Treat the water with Saponin at a ratio of 15 to 20 kg/1,000 m3. Saponin has the effect of eliminating impurities and parasites that can cause diseases, ensuring a clean water environment.

Treat the water with Potassium Permanganate (KMnO4) at a dosage of 4 to 5 g/m3 of water, and aerate and expose the water to sunlight for 24 hours.
Aerate the water and expose it to sunlight, and use Aquadine (0.3 liters/1,000 m3) or Lasan – BKC 80 (0.4 liters/1,000 m3) to eliminate impurities.

Fertilizing to Enhance Pond Color in Integrated Snakehead and Whiteleg Shrimp Farming

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Fertilization for pond color enhancement is an important step

Organic fertilizers (manure, chicken, cow, or buffalo manure) or inorganic fertilizers such as Phosphorous (0.2 kg/100 m3) + Urea (0.1 kg/100 m3) can be used. These fertilizers should be applied over 2 to 3 days.

After 2 to 3 days of fertilization, the water in the farming pond will reach a depth of 40 to 50 cm and have a green or brownish-yellow color, indicating that it is ready for stocking.

Using specialized biological products to enhance pond color is also a recommended method.

The success and quality of integrated snakehead and whiteleg shrimp farming depend on a clean and well-prepared farming pond in various technical aspects. The information provided above is essential for the development of the integrated snakehead and whiteleg shrimp farming model. We hope that farmers can grasp and apply these techniques effectively.

Read more: Achieving High-Quality Integrated Snakehead and Whiteleg Shrimp Farming

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Frequently Asked Questions

1. What are the general technical requirements for raising paired fish and shrimp?
– The fish and shrimp farming area should be between 2,000 and 5,000 square meters.
– The pond banks should not leak or allow water to be lost or overflow.
– The pond banks should be at least 0.3 meters higher than the highest water level.
– The depth of the pond should be between 1.5 and 1.8 meters when the water level is between 1.2 and 1.5 meters.
– The bottom pH of the pond should be greater than 5.5, and the water pH should be between 7.5 and 8.5.
– The dissolved oxygen level should be between 4 and 9 mg/l.

2. How should a newly constructed pond be prepared for raising paired fish and shrimp?
– The water should be filled in the pond for 2 to 3 days, then drained and rinsed 2 to 3 times.
– Lime should be applied to the pond bottom to improve it.
– Dolomite or rock powder can be used to adjust the water pH during fish farming.

3. How should an old pond be renovated for raising paired fish and shrimp?
– After harvesting the fish, the water should be drained, and the bottom mud should be dredged.
– Lime should be applied, and the pond bottom should be exposed to sunlight for 10 to 15 days to decompose organic matter.
– If the pond cannot be emptied, a wet renovation method can be used, including pumping and flushing the pond.

4. How can the water quality of the pond be kept clean?
– After renovating the pond bottom, the water can be filled into the pond through a filter screen.
– Sapounin or other chemicals can be used to treat water and eliminate impurities and parasites.

5. How can the pond be fertilized to enhance color for raising paired fish and shrimp?
– Organic manure or inorganic fertilizers can be applied to the pond.
– Limestone and urea can be used for fertilization.
– Specialized biological products can be used to enhance color.

Emilia Chaney
Emilia Chaneyhttps://agrisearch.net
My name is Emilia Chaney. I'm a social girl from Romania with a big smile and 3 passions: Agriculture, Travel and Social Media. I try to make this blog practical, full of great advice and inspiring ideas.

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